DetectChanges.py

import time

def get_contents(file_name):
    return open(file_name).readlines()  # Return a list of the lines of text

last_version = get_contents('test.txt')

while True:
    current_version = get_contents('test.txt')
    if last_version != current_version:  # Has it changed from what it was before?
        print('Changes Made')
        last_version = current_version
    time.sleep(.5)